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(No Model.) 3 Sheets-Sheet 1.

A. D. EMERY. SHUTTLE STOP MOTION FOR LOOMS.

. No. 605,602. Patented June 14,1898.

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(No Model.) 3 Sheets-Sheet 2 A. D. EMERY.

SHUTTLE STOP MOTION FOR LOOMS.

BIO/605,602.

Patented June 14,1898;

(No Model.) 3 Sheets-Sheet 3.

' A. D. EMERY.

SHUTTLE STOP MOTION FOR LOOMS.

No. 605,602. Patented June 14, 1898.

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To all whom it may concern: i

- UNITED; STATES PATENT rte.

ABRAMVDQEMERY, or 'rA'UnToN, MASSACHUSETTS, ASSIGNOR TO THE UNIVERSAL LOOM COMPANY, on NEW YORK, N. Y.

SHUTTLE STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 605,602, dated June 14, 1898.

Application filed February 20, 1897. Serial No. 624,384. (No model.) 1

Be it known that I, ABRAM D. EMERY, of Taunton, Massachusetts, have invented certain Improvements in Shuttle Stop-Motions for Looms, of which the following is a specification.

The several objects of the herein-described improvements are to automatically always bring the operative parts of a loom to rest in prescribed position, if a shuttle failsto box properly, without any smash, and with the warp so extensively slacked that the warpthreads will not be broken even if the shuttle stops in the shed. These Objects are accomplished by the employment of the spring-actuated progressively-acting stopping instrumentality which in my pending application, Serial No. 643,320, is shown, described, and claimed in combination with a plurality of stop-motions with common connections to said stopping instrumentality; The said stopping instrumentality is adapted to bring the operative parts of the loom to rest by its progressive action during a prescribed part of one revolution of the lay-driving'shaft, and it is combined, in the present case, with a shuttle stop-motion which is brought into operation if the shuttle fails to box properly and which is so timed as to performits .functions of slacking the warp and concurrently tripping saidstopping instrumentality into action at such predetermined stage in'the revolution of the lay driving shaft aswill result in bringing the operative parts of the loom to rest just after the lay has commenced to re- 7 cede from the beating-line.

The accompanying drawings, representing the shuttle-stop and warp-slacking devices and so much of the loom as is necessary to illustrate the modes of operation of said devices are as follows, to-wit:

Figure 1 is a transverse vertical section of a portionof the loom, showing the principal members of the shuttle-stop and warp-slacking devices in side elevation. Fig. 2 is a horizontal section taken through the plane indicated by the dotted line am on Fig. 1, afiord- "ing a top View of portions of the lay and the shuttle stop-motion. Fig. 3 is a front elevation of the parts shown in Fig. 2. The drawings show portions of an upright end of a contracting spiral spring D the opposite end of which is secured to the girder B. When the loom is running normally, the drivin g-belt,as shown in Fig. 1, is retainedin engagement with the driving-pulley Clby means of the trip-lever E, pivoted at the rear end to the frame of the loom and having near its for-' ward end a shoulder E, which engages the collar D When the hand-lever D is swung outward into the position in which it is represented in Fig. 1, the toe F, projecting laterally from its hub, engages a collar F, affixed to the upper end of the slide-rod F ,'and pulls the slide-rod F upward, and thereby compresses the expanding spiral spring F which abuts at its upper end against the perforated bracket F, through which the rod F slides, and delivers its thrust against the collar F affixed to the lower end of the slide-rod F The collar F on the upper end of the sliderod F has fastened to it the free end F of the brake-strap F which surrounds twothirds or more of the periphery of the brakewheel F affixed to the driving-shaft O, and has its opposite end F securedto the frame of the loom.

The stopping of the loom involves the lifting, either manuallyor otherwise, of the forward end of the trip-lever E. This disengages the shoulder E from the collar D and thus releases'the belt-shifter slide-bar D to the action of the contracting spring D. The spring D then pulls the slide-bar D backward and shifts the belt to the loose pulley C and at the same time swings backwardthe hand-lever D swinging downward the toeF,

and thereby releasing the 'brake strap F to frictional influence upon the brake-strap of the periphery of the brake-wheel, which retates, as indicated by the curved arrow on Fig. 3, in such direction as to make that frictional influence tend to pull the brake-strap away from its fixed end F", and thus cause it to tighten itself upon the brake-wheel.

To stop the loom if the shuttle fails to box properly, each shuttle-box is provided with a movable cheek G, which works in a slot G, formed in the rear side wall of the box. The outer end of the cheek G is vertically pivoted to the lay, and its opposite end has affixed to it a finger G adapted to be pressed upon by the screw G adjustablyinserted through one of the crank-arms G of the rock-shaft The rock-shaft G, which is provided with bearings upon the rear wall of the lay, extends across from one shuttle-box to the other and has at each end a downwardly-extending crank-arm like the arm G. (Shown in Fig. 1.)

A torsion-sprin g G", surrounding the rockshaft G has one of its ends affixed to the box G which affords one of the bearings for the rock-shaft and has its opposite end secured to the collar G which is secured to the rockshaft by the set screw G. The torsional strain of the spring G6 tends to press the crankarms against the finger of the cheek-pieces, and thus rock the free ends of the cheekpieces into the path of the shuttle. So long as the shuttle boxes itself properly in either box it pushes out the cheek-piece G of the box in which it is seated, and thus rocks the rock-shaft G against the influence of its torsion-spring 1 A dagger II, rigidly secured to and projecting upwardly from the rockshaft G is thus swung out of operative position. It the shuttle fails to reach its place in either of the boxes, the rock-shaft G5 is not rocked and the dagger llinclincs so far backward that during the latter part of the upward excursion of the lay the upper end of the dagger ll catches under the shoulder I on the free end of the lever J, the opposite end of which is loosely mounted upon a stud J, projectinglaterally from a bracket secu red to the loom-frame.

The lover I has pivotally connected with it the upper end of the adjustably-extensible link K, provided about midway of its length with the shoulder K, which, when the lever J is pushed upward by the dagger ll, engages the pin K, projecting laterally from the triplever E, and thus lifts the trip-lever E out of engagement with the collar D and thereby trips the belt-shifter and brake into action and stops the loom by the time the lay has descended and the shed opened. An arm I projecting upwardly from the lover I, is provided with an adjustable screw-bolt which, by bearin against the girder B, serves as a stop to limit the range of downward movement of the lever .T.

The link K is composed of two pieces K and K, overlapped at their meeting ends and secured in a trough-shaped clamping-plate the rock-shaft K".

K by the transverse screw-bolts K. One or the other of the overlapped portions is provided with a slot K to permit the passage of the screw-bolt K and afford opportunity for varying the total length of the link K, as may be required. The lower extremity of the link K is pivoted to the crank-arm K, affixed to The rock-shaft K is provided with two radially-projectin g sears L L, one of which is shown in elevation in Fig. 1

in solid lines in the position which the scars occupy when the 100111 is running normally,

in which position each sear engages the rear extremity L of the adjacent side. members L 'of the rocking frame L warp N, maintained under proper tension,

extends upward from the warp-beam N over the whip-roller L", thence under the. 1] nffeatcher trough N thence upwardly across the lease-rods N through the harnesses N, and through the reed N to the weaving-line of the fabric in process of being woven; but if a shuttle fails to box properly the resulting upward movement of the link K causes the scars L L to be rocked out of engagement with the side members L of the rocking whiproller frame L which frame thereupon drops from the position in which it is represented in solid lines in Fig. 1 to the position in which it is represented in dotted lines in said figure. This so greatly slacks the warp that there will be no breaking of the warp-threads even if the shuttle should be in the shed while the beat is taking place, and a second heat cannot take place, because the self-tightening brake-strap is so effective that it is capable of stopping the loom during the one-half of one revolution of the lay-driving shaft ensuing next after the dagger li commences to lift the lever J.

\Vhat is claimed as the invention is- 1. In a loom, the combination, as herein set forth, of a progressively-acting stopping instrumentality adapted to stop the loom by its progressive action during a prescribed part of one revolution of the lay-driving shaft; a shuttle stop-motion. adapted to be brought into operation during the latter part of the beating stroke of the lay, warp-slacking mechanism controlled by the said shuttle stop-motion, and connections between said shuttle stop-motion and said progressively-acting stopping instrumentality, whereby, if the shuttle fails to box properly, the operative parts of the loom are brought to rest just after the lay has commenced to rccede from the beating-line.

2. In a loom, the combination, as herein set forth, of a progressively-acting stopping instrumentalityadapted to stop the loom byits progressive action during a prescribed part of one revolution of the lay-driving shaft; a

' shuttle. stop-motion adapted to be brought into operation during the latterpart of the beating stroke of the lay; a whip-roller for normally holding the warp under suitable tension; connections between said Whip-roller and said shuttle stop-motion and connections between said shuttle stop-motion and said progressively-acting stopping instrumentality, whereby, if the shuttle fails to box properly, the Warp is slaeked and the operative 10 parts of the loom are brought to rest just after the lay has commenced to recede from the beating-line.

ABRAM D. EMERY.

Witnesses:

ESTELLE M.- EM RY, E. GATTERER. 

